A.O. Smith 300 Series, Инструкция по эксплуатации

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64
DIAGRAMS DIAGRAMS
CAUTION
Label all wires prior to disconnection when servicing controls.
Wiring errors can cause improper and dangerous operation. Verify
proper operation after servicing.
● Disconnect from electrical supply before
servicing unit. Replace all doors and
panels before operating heater.
Electrical Shock Hazard
● If any of the origina wires supplied with
the appliance must be replaced, it must
be replaced with appliance wire material
with minimum temperature rateing of
105°C and a minimum size of No. 18 AWG.
WIRING DIAGRAM
Splic
e
Splic
e
G
ree
n
G
ree
n
Fe
rri
te
Bea
d
Transformer
Secondary
Wh
ite
/ R
ed
W
hi
te
/
Blu
e
Transformer
Primary
Bla
ck
W
hi
te
Tr
an
sf
or
m
er
Powe r
Suppl y J 2
1
Blu
e
3
O
rang
e
4
Whit
e/
G
re
en
Power
Supply J1
2
W
hi
te
3
Bla
ck
Pow
er
Sup
ply
C
entr
al
Co
nt
rol
Bo
ar
d
(CCB
)
Blo
w
er
1
Bl
ac
k
2
W
hi
te
3
Gr
ee
n
120V OUT to
Blo wer
L1
N
eu
tra
l
PE
1
Whi
te
/
Br
ow
n
2
Whit
e
/ O
rang
e
4
W
hi
te
/
Blu
e
Blower
Spe ed
5
W
hi
te
/
G
re
en
24Vu
re
g
PW
M
Sig
na
l
Sp
eed
f-
ba
ck
Dgn
d
8
W
hit
e
Field Bo x
HIG H V olta ge
J1
7
Bla
ck
6
R
ed
5
G
ree
n
4
W
hit
e
3
Bla
ck
2
Re
d
G
ree
n
Neu
tra
l
L1
Pu
mp
Comm
on
Pu
mp
N
O
AU
X
N
O
AUX
C
ommo
n
AUX
N
C
PE
Ju
nc
tion
B
ox
CCB J16
Low Voltage In
1
Whi
te
/Re
d
2
W
hi
te
/B
lu
e
4
Bl
ue
5
O
ra
ng
e
6
W
hi
te
/G
ree
n
24V
AC
24V
AC
12
VD
C
5VD
C
D
gn
d
9
Whit
e
CCB J1
HIGH Voltage In
8
Blac
k
7
Re
d
6
G
ree
n
3
Bl
ac
k
4
Whit
e
5
2
Re
d
1
Ne
ut
ra
l
L1
Pu
m
p
Co
m
m
on
Pum
p
N
O
AUX
N
O
AU
X
C
omm
on
AU
X
N
C
PE
CCB J5
Blower Logic
1
W
hi
te
/B
row
n
2
W
hi
te
/Blu
e
4
W
hi
te
/O
ran
ge
5
W
hi
te
/G
re
en
24Vu
re
g
PW
M
Sig
na
l
Spe
ed
f-
ba
ck
D
gn
d
Gre
en
Ye
llo
w
CCB J14
Lim it S trin g
1
Blu
e
2
G
re
en
3
Yello
w
4
Bla
ck
6
Bla
ck
7
R
ed
8
Bla
ck
9
R
ed
10
B
la
ck
11
Re
d
12
B
la
ck
An
od
e
D
gn
d
Flam
e
R
od
Co
nde
nsa
te
G
as
P
S
G
as
V
S
w
itc
h
G
as
V
24
V
24
V
R
tn
Co
nde
nsa
te
G
as
P
S
G
as
V
S
w
itc
h
1
R
ed
2
Bl
ac
k
CC B J 6
120V Ou t
N
eutr
al
12
0
to
S
par
k
Re
d
Blac
k
Re
d
Blac
k
Up
pe
r T
em
pe
ra
tu
re
Pr
obe
/
EC
O
1
Re
d
2
Blac
k
CCB J9
Uppe r Pr obe
EC
O
The
rmis
to
r
4
Re
d
3
Blac
k
EC
O
The
rmis
to
r
G
as
Valv
e
G
ro
und
Ba
r
Sp
ar
k
M
odul
e
120
V
N
eutra
l
L1
Neu
tra
l
Pr
ot
ec
tiv
e
Earth
= multi-conductor power limited cabl
e,
1
8A
WG
80°C
300V
UL
ca
tegory
QPTZ
C
onne
ct
s
to
bu
rne
r
bo
lt
= S
park
igni
tion
wire
, 22
0° C 25kVDC 8mm EMI
suppression
Spa
rk
R
od
Flam
e
Ro
d
CCB J17
Low Voltage Field
No
fa
ct
or
y
co
nne
ctio
ns
G
as
Valv
e
Po
w
er
S
w
itc
h
Splic
e
Bl
ue
Blu
e
Ano
de
R
od
2
Re
d
3
G
ree
n
4
W
hite
/B
row
n
5
W
hi
te
/B
lu
e
CCB J 12
Configu rat ion K ey
SDA
(d
ata
)
SCL
(da
ta
)
W
rit
e
pr
ot
ec
t
6
Whit
e/
O
ra
ng
e
+5V Dg
nd
C
on
fig
ur
at
io
n
Ke
y
1
Blac
k
2
Re
d
CC B J 15
Pressure
Sw itche s
In
le
t r
et
ur
n
O
ut
le
t r
et
ur
n
/ I
nl
et
p
ow
er
4
G
ree
n
Ou
tle
t p
ow
er
= 1
8AWG AW
M
wire
105
°C
600
V
UL
st
yle
1
015
.
F
la
m
e
rod
wire
=
200
°C 3
00
V
UL
1180
.
1
Re
d
2
Bl
ac
k
3
G
ree
n
G
rou
nd
BURNER
BOL
T
O
ut
le
t P
re
ss
ur
e
Sw
itc
h
In
le
t P
re
ss
ur
e
Sw
itc
h
1
Blu
e
3
Ye
llo
w
4
O
rang
e
Disp lay J1
5
Viole
t
+5
V
Da
ta
+
Da
ta
-
D
g
nd
1
Bl
ue
3
Ye
llo
w
4
O
ra
ng
e
CCB J3
5
Viole
t
+5V
Da
ta
+
Da
ta
-
D
gn
d
Ju
mpe
r
sh
or
ts
wires
Figure 53. Wiring Schematic (Continued From Previous Page).